Page 203 - 《水资源与水工程学报》2022年第1期
P. 203
!33 " ! 1 # & ' ( ) & * + , - Vol.33No.1
2022 $ 2 % JournalofWaterResources&WaterEngineering Feb.,2022
DOI:10.11705/j.issn.1672-643X.2022.01.28
±ú2'Æ¥¼ß½¾jP:ØD
1 2 3 4 4
}ñò , cóô , õq , ö » , 5R
(1. úvSZ82 QST2U, &È úv 110870;2. ë82 $E&2R$%$ST./7«}¼, Wª 100084;
3. É."©<STZdefg, 2" 4E 410000;4. É.ÑSZÉtdefg, Wª 100142)
= >: KGH+8lmt3ASW5@AÈÊr»¼, !"#PQÃ24öÏ,-3ASTK, ³¢-
³:3Az1áÉ、 zy"MA{Ù\Ñ)*, %¢Åß@*1á|´u\Ñ*, ]°òT3
AxÍ@Arß@ìgÈ]ë, pH3A1á、 A{´uM3AÈÊrã。y¿z: 3AS°TÉ,
1yMxÍ"²à6ÈÊë³òK´I F、 MS、 zyçÅ©MS 4 ¡¸¹; ´I FMzy
矹, 1ááÉ、 "MW5Ùà6ÈÊP8, MS3AÈʶdÁ¢; ´I F、 MSM
zy矹, ìW"ÝÔ#*à6¾"ÈÊO8; 3A FW5XCrà6Èʶd»¼, k
¯´I FM¥W5XCrÈÊïYO8。3A F°TÉ£wrjkST'x。
?@A: +8lmt3A; xÍ@A; ÈÊòT; ß@)*; STÜ
+
BCDEF:TV551.4 2 GHIJK:A GLMF:1672643X(2022)01019907
Influenceofsuperlargedeepfoundationpitexcavationonthedeformationof
surroundingenvironmentandcountermeasures
1
4
4
2
3
DONGLihu,SONGDanqing,TANGGaojie,JINYuan,WANGHaitao
(1.SchoolofElectricalEngineering,ShenyangUniversityofTechnology,Shenyang110870,China;2.StateKeyLaboratoryof
HydroscienceandEngineering ,TsinghuaUniversity,Beijing100084,China;3.ChinaConstructionFifthEngineeringDivision
Co. ,Ltd.,Changsha410000,China;4ChinaNuclearIndustryZhongyuanConstructionCo.,Ltd.,Beijing100142,China)
Abstract:Inordertoinvestigatetheinfluenceofsuperlargecomplexdeepfoundationpitexcavationon
thesurroundingenvironmentaldeformation ,takingtheLonghuFinanceIslandprojectinZhengzhouCity,
HenanProvinceasanexample,thetotalstationmeterwasusedtomonitorthesupportingpiletop,thein
ternalsupportinggridcolumnsandthegroundsurfaceoutsidethepit,andthemultipointdisplacement
meterwasusedtosurveytheslopeofthesoilaroundthesupportingpile.Andthenthespatiotemporale
volutioncharacteristicsofdisplacementofsurroundingbuildingsnearthefoundationpitwasanalyzedto
investigatethecoordinationofthesupportingpile ,externalsoilmassandthefoundationpitdeformation.
Theresearchresultsshowthatthesettlementanddeformationcharacteristicsofthesupportingstructure
andsurroundingbuildingscanbedividedintofourstagesintheexcavationprocessofthefoundationpit ,
namelyearthworkexcavation,cushionconstruction,internalsupportremovalandcushioncompletion.
Duringtheearthworkexcavationandinternalsupportremovalstage,thesettlementdeformationofthe
supportingpiletop,theinternalsupportinggridcolumnsandthesurroundinggroundislarge,andthe
cushionconstructionhasaweakeningeffectonthefoundationpitdeformation.Inthestagesofearthwork
excavation ,cushionconstructionandinternalsupportremoval,theunevensettlementbetweenadjacent
gridcolumnsincreasesthedeformationofthecolumns.Theexcavationmainlyaffectsthesettlementde
formationoftheadjacentpipegallery,whichacceleratesthedeformationofthegalleryintheincipient
!"#$:20210703; %$:20211010
'()*: ./01&234,-(52109125); É.@A&234,-(2020M680583);@AW[?í´*+,
-(BX20200191); ë82“ $42í” *+,-(2019SM058)
+,-.: £%Þ(1995-), <, !"Â?, EAGHD, GHIJKÅçOvèR=|}òT。
ÁÂ+,: r%Í(1989-), <, !"PQ?, @A, þYGHÔ, Ë/´uº=IrGH。